Physics

Problem

Starting from the origin at time

t = 0

, with initial velocity

5\hat{j}

\text{ms}^{-1}

, a particle moves in the

x

y

plane with a constant acceleration of

(10\hat{i} + 4\hat{j})

\text{ms}^{-2}

. At time

t

, its coordinates are

(20 \text{ m}, y_0 \text{ m})

. The values of

t

and

y_0

are, respectively : a. 2 s and 18 m b. 4 s and 52 m c. 2 s and 24 m d. 5 s and 25 m